[Magatia's Secret] The Hidden Words

This note has been cast with a very sophisticated set of alchemy. Whoever wrote this note must be a highly-trained alchemist. This is not going to be an easy task. It will take a bit of time to extract the hidden text.

But... there's a much, much easier way to extract the hidden text. Are you interested in taking that route instead?

I'll give you this Homunscullo's Blood. Homunscullo's Blood contains a mysterious power that reveals the truth from anything, but it's a bit of a rough method to approach. Talk to me again when you are ready.

If you can't do that, then I'll have to break up the spell with alchemy, but... the items required for this are just as hard to obtain. Not only that, it'll take me about a 100 years to formulate that potion that'll allow us to read the hidden message. Are you okay with that?

This should finally allow us to read the hidden message in the note. How do we do that? Like this.

(Without any hesitation, Alcaster poured Homunscullo's Blood all over Dr. De Lang's Notes.)

I suppose you're not quite ready for it. I've warned you that it's a rough method.